The CESAR Echelle Spectrograph

Physics

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[0310] Atmospheric Composition And Structure / Airglow And Aurora, [0335] Atmospheric Composition And Structure / Ion Chemistry Of The Atmosphere, [0340] Atmospheric Composition And Structure / Middle Atmosphere: Composition And Chemistry, [0394] Atmospheric Composition And Structure / Instruments And Techniques

Scientific paper

CESAR (Compact Echelle Spectrograph for Aeronomic Research) is an NSF MRI-funded instrument being constructed in the Molecular Physics Laboratory at SRI International. This spectrograph is patterned after instruments in use at the Keck telescopes on Mauna Kea, which generate sky spectra that have proven to be of great aeronomical value. CESAR is designed to be re-locatable, with initial measurements planned for high latitudes, in contrast to the Keck equatorial site. CESAR is to be operated remotely, continuously collecting data in real time. Initial measurements have been carried out with a laboratory N2 discharge, generating an aurora-like spectrum. The N2 1PG system was recorded at a resolution close to the design figure of 20,000, and the spectrum has been accurately simulated. The work was supported by NSF grant ATM-0723232.

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